Roving-stop for spinning-frames.



E. J. VALES.

ROVING STOP PoR SPINNING FRAMES.

Patented July 14,1914,

j STATES EDWARD J. VALES, O AUGUSTA, GEORGIA.

BOVING-STOP FOR incassa.

Specification of Letters Patent.

SPINNING-FRAMES.

Patented July 14, 1914.

Application led December i913. Serial No. 804,633.

To @ZZ whom it may concern.'

Be it known that ll, EDWARD J.' VALns, a citizen of the United States,and a'reisident of the city of Augusta, in the county of Richmond, Stateof Georgia, have invented cert-ain new and useful lmprovements inRoving-Stops for Spinning-Frames, of which the following is aspecification.

This invention relates broadly to the spinning branch of the textilearts and more particularly to roving stops for spinning frames.

The principal object of this invention is to provide a mechanism forstopping the roving from feeding to the feed rolls when the thread isbroken.

A further object of this invention is to provide a stop for the rovingprior t-o its reaching the feeding rolls, which stop is automaticallycarried into position by the movement of the roving when the thread isbroken between the front feeding roll and the bobbin.

A still further object of this invention is` Figure l is a detailelevational view of a part of a roll stand showing the roving stop innormal position. Fig. 2 is an enlarged view of the plunger head holdingthe roving stop in the trumpet guide. llig. 3 is a detail view of thesupport for the roving stop device. i

The entire spinning-machine is not illustrated for the reason that thisdevice is intended for use on the ordinary well known type of spinningframe and only such parts as directly coperate with the operation ofthis device have been illust-rated, and these parts are only illustrateddiagrammatically.

ln the operation of a spinning frame or machine, the thread frequentlybreaks between the front feed rolls and the spindle or bobbin.Heretofore it has been t-he practice to provide a scavenging, or waste,roll beneath the front feed roll to catch the loose end of the roving,in case the thread breaks, and Wind it upon the scavenging roll toprevent the loose end from catching in other portions of the machinery.This type of y`mechanism is wasteful of the stock and requiresconsiderable .attention in that the scavenging roll must be frequentlycleared yor'cleanedl To obviate the difficulties attendant upon thistype of mechanism, a :number of. roving stop devices have been devisedto prevent the feeding of the roving "to, or through, the feed rollswhen the thread is broken. 'Many complicated clamps, special guides, andspecial types of feed mechanism have been devised. Most of these devicesar'e intricate and are delicate in adjustment and operation, and it iswell recognized that delicate mechanisms are usually unsatisifactory ina textile mill, because they soon fbecome clogged in their action byloose pieces of yarn, waste, etc. i j The inventionlwhich willhereinafter be described in detail, comprises simply a grcughened orknurled plunger stop which drops against the moving roving when thethread is broken, and the movement of the roving `itself wedges thisyplunger head against the trumpet guide `so tightly that the resistanceof the roving passing through the trumpet guide is greater than thefeeding friction of the feed rolls, consequently the roving is heldstationary between the f feed rolls and does not feed. yThis mechanismis simple' in construction, positive in its operation and obviates thedelicate parts of special clampsand complicated stops.

`Referring now to the drawings and particularly to Fig. l, the' rollstand is shown as including a main frame` l,` which carries a front feedroll 2, and also carries roll slides t, upon which a middle roll5 andaback roll 6 are mounted. TheV top'rolls 7 coperatewith the feed rollsand are maintained in position by cap bars 8. Saddles 9 and 10 restagainst the upper portion of the-bearings of the top rollsand distributethe pressure ofthe weight (not shown) which hangs on thev weight leverl11 thatk is koperatively connected by a link l2 to the saddle y9. Aroving rod, or bar 14, carries trumpet guides 15 (only onebeingillustrated) and is constructed to have a slight traverse movement.Thek parts hereinbefore described in detail by reference' to thedrawings, are all common in the art and are merely referred to asillusitrativeiof generaltypes of mechanismsof the character' new used inspinning machines. trative, and any other type of such mechanism maybeus'ed in co-nnection lwith appl-istop comprising a U-shaped support.16,

17, or other convenient type of securing device. This `Ilvl-:shaped.support 'carries a hubl 18', which is pivotally :mounted upon :a `screwbolt 19 which passes ythrough one of the og' enings :20V fin theilil-shaped `support and tfereby pivots the hub 18 between the' sideplates fof the support 16. The hub .18 carries a feeler linger 21 whichis preferably tapered from the Vhub outwardly toward `the :point whichiisformedinto a hookerk guide r22fthat is adaptedv to':gen-tl` rest uponthe thread 24 afterat Aleaves the firent rotl 2 and before it reachesthe pig tail thread guide l(not shown). The reason, or preference, for

' tapering the feeler :finger is to permit it to rest ii-ghtly upon.thethfread 24 land to distribute most 1of the weigh-t near the hub 18.

n This hub. 18 also. carries .an upwardly projectingrod 25,011 theiupper end `of which is mounted .a rougi-i-leI-red, or` knurled, rovingstop plunger 26.y This plunger 'may be formed of hardened steel and ispreferably coneesh'aped, :and is provided with fsmall points, V'orknurls, vor spines 27. The U- shaped support 1&6 is provided with raplurality of yopenings 20., previously referred to,`

(or itmay be provided with a slot) to permit the vertical' adjustment ofthe screw bolt 19 in order to admit of the device to be adjusted in suchmannerthat the point of the plunger 'stop v26 will striire directlyinlto the trumpet guide Whent'he hub 18 is rotated in a forwarddirectionas the feeier finger 21 is x,drop ed by thebreaking of thethread. Since itt e `slrpport 16 carrying Athe roving stop device, ismounted on the roving rod `or ba-r 141, the roving-stop mechanism istraversed bythe roving rod 14 and lthe trumpets 15, therebymaintai'ningthe correct position for loperation at all times.

in 'operation of the device the i thread 211 passes under 'hooker-'guidev22 :on Athe fee'ler finger 21 `and normally holds this fingern anelevated i-pos'iti/en.r When the threadV bre-airs the feeiler fingerdrops to dotted .line position shown in Fig. 1, and the lsnurledYf'hiead ."216 fairs-against the moving' rofvtnigzs that is beinfgdrawnthrough the trumpet .guide 115 by the feed rolls; 'The lcontinue-dmovement of the Aroving causes the spines 27,1011- roughened portions`of the -plunger i265', to eng-age 'with the roving, thus carrying thevplunger with the roving until the plunger iis 'drawn so tightly in theopeningfof the trumpetiglu'ide 'that the rovingcan no longer be drawnforward by 'the feed rolls, 'thereby preventing the -lloose end of thebroken thread from being'fed forward by This mechanism is merely illus-`the feed rolls. Immediately as the operator ties the ends o'f 'the"thread together, starts K the sp-inning, opera-tion, and raises thehookCants invention, which consists of a roving or guide 22 to place it inposition over the Y thread, Hthe knurled plunger 26 is Withdrawnpreferably formed of sheet metal, and at' tached to the roving bar 14:by a stub screw =y 'from within the trumpet ,guide 15 andimmediately'the roving 28 will again be drawn forward by the feed rollsand the lspinning frame will operate normally. Y y

Having thus described my invention, what I desire to claim iszl1. Aroving stop for spinning machines roving bar, .a hub, a Isupport whereinsaidV hub is pivotally mounted, said support v being vattac'hedto the'roving :fb-ar, a feeler ingercarried 'by said hub, a hoolr on saidfeeler (finger `adaptedto engage vthe thread and support the feelerfinger thereon, an upwardly extending rod also carried by said hub, fandva plunger stop carried by said rod, `said plunger stop beingIcone-shaped,

`the axis of said vcone being substantiallytan-` gential to la circlepassing through said trumpet gui-de whose center is a pivotal point` forsaid hub, the vconical portion of said plunger lstop being lToughenedkto provide a frictional surface adapted to engage and stop therovingwhen the feeler finger is dropped by Jche breaking of thethread.

roving stop for spinning mac'l'iines` and the like, comprising incombination, a

roll stand, feed rolls carried by said roll standfvrand adapted 'to feeda strand of rov-v ing, 4a roving bar, a trumpet guide mounted on saidroving bar, feeler finger, a hook en the 'end :of said feeler finger 'inengage-- ment with the thread vas" it leaves thev feed ll() l vided withla roughened surface land-operrolls, a conically shaped plunger vheadproatively connected with said feeler finger, the par-ts beingconstructed andfarranged to drop the conical plunger into the trumpetguide when the thread is broken. Y

3. A roving stop for spinning machines and the like, comprising incombination,

feed vrolls adapted to draw roving from al y suitable supply and feedthe roving forward as required, a funnel shaped yguide through which thestrand of roving passes prior to reaching' :the feed rolls, a feelerfinger in engagement with the strand after it leaves the feed reills,and a conical shaped plunger operatively connectedvwith the feelerfinger to drop the -point yof said conical shaped plunger into thefunnel shaped guide when the `strand lin lengagement with the feeler yfinger is broken, said conical shaped plunger being provided with aroughened su-r-` face to engage the roving when dropped as aforesaid.

4. A roving stop for spinning machines and the like, comprising incombination, a funnel shaped roving guide for guiding a strand ofroving, a eeler iinger adapted to engage said strand, and a conicalshaped plunger operatively connected with said feeler finger and adaptedto be dropped into said funnel shaped guide when the strand is broken,said plunger being provided with a roughened surface to engage saidroving and clamp the same within said guide.

5. A roving stop for spinning machines and the like, comprising incombination, a roving guide having an opening, a feeler iinger adaptedto engage the strand of roving, a conical shaped plunger having aroughened surface, and means for drawing the roving through said guide,the said parts being constructed and arranged to dropthe point of theconical plunger into the opening in the roving guide when the strand isbroken and to draw the plunger tightly against the guide to stop theroving by the ytension on Jthe roving.

6. In combination, a funnel shaped rovingguide, a conical shaped plungerroving stop, said plunger stop being provided with a roughened surface,means for drawing a strand of roving through said funnel shaped guide,and means for dropping the conical plunger stop against the movingroving within said guide to engage the roving and draw the plungerforward to wedge the roving between said conical plunger stop and thewalls of said guide to stop the feed of the roving.

EDWARD J. VALES. Witnesses:

EARLE L. PARMELEE, M. B. NICHOLS.

Copies of this patent :nay be obtained for five cents each, byaddressing the Commissioner of Tatents, Washington, D. C.

